A New Approach for Probing the Mobility and Lifetime of Photogenerated Charge Carriers in Organic Solar Cells Under Real Operating Conditions

A. Baumann,

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

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J. Lorrmann,

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

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D. Rauh,

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

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C. Deibel,

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

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V. Dyakonov,

Corresponding Author

dyakonov@physik.uni-wuerzburg.de

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany.Search for more papers by this author

A. Baumann,

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

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J. Lorrmann,

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

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D. Rauh,

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

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C. Deibel,

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

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V. Dyakonov,

Corresponding Author

dyakonov@physik.uni-wuerzburg.de

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany

Experimental Physics VI, Julius-Maximilians-University of Würzburg, 97074 Würzburg, Germany

Bavarian Center for Applied Energy, Research e.V. (ZAE Bayern), 97074 Würzburg, Germany.Search for more papers by this author

First published: 03 July 2012

https://doi.org/10.1002/adma.201200874

Citations: 99

Abstract

A new transient charge extraction technique is presented, which facilitates simultaneous measurements of mobility and lifetime of photogenerated charge carriers in organic solar cells under real operating conditions. An adaptive field control is implemented keeping the solar cell at open circuit conditions during recombination. The practical benefit of the new technique is demonstrated by determining the mobility-lifetime parameter of solar cells based on PCDTBT:PC₇₁BM and P3HT:PC₆₁BM.